src/bmap.c

   1 /* Copyright (C) 1996-1997 Aleksey Volynskov
   2  * Copyright (C) 2011 Rambo
   3  * Copyright (C) 2020 SovietPony
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, version 3 of the License ONLY.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <stdio.h>
  19 #include "glob.h"
  20 #include "view.h"
  21 #include "bmap.h"
  22
  23 byte fld_need_remap=1;
  24
  25 byte bmap[FLDH/4][FLDW/4];
  26
  27 void BM_mark(obj_t *o,byte f) {
  28   int x,y;
  29   int xs,ys,xe,ye;
  30
  31   if((xs=(o->x-o->r)>>5)<0) xs=0;
  32   if((xe=(o->x+o->r)>>5)>=FLDW/4) xe=FLDW/4-1;
  33   if((ys=(o->y-o->h)>>5)<0) ys=0;
  34   if((ye=o->y>>5)>=FLDH/4) ye=FLDH/4-1;
  35   for(y=ys;y<=ye;++y)
  36         for(x=xs;x<=xe;++x)
  37           bmap[y][x]|=f;
  38 }
  39
  40 void BM_clear(byte f)
  41 {
  42     int x,y;
  43     for(x=0; x<FLDW/4; x++)
  44         for (y=0; y<FLDH/4; y++)
  45             bmap[y][x]&=~f;
  46 }
  47
  48 void BM_remapfld(void)
  49 {
  50     int x,y;
  51     BM_clear(BM_WALL);
  52     for(x=0; x<FLDW; x++)
  53         for(y=0; y<FLDH; y++)
  54             if (fld[y][x] == 1 || fld[y][x] == 2)
  55                 bmap[y/4][x/4]|=BM_WALL;
  56     fld_need_remap = 0;
  57 }